Verbal Reasoning - Mental Ability Questions

If '+' stands for multiplication, '-' stands for addition, 'x' stands for division, then what is the value of 128 + 9 - 16 x 4 = ?

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

2 ÷ 12 - 6 + 20 x 4 = ?

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with someLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
RECIPROCATE

In the following question, select the related letter from the given alternatives.
DE : O : : AF : ?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.

25 ÷ 2 - 10 + 10 x 6 = ?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 8442 & 9 # 7 % 6 @ 4 = ?

MATHEMATICS is related to NUMBERS in the same way HISTORY is related to